title: Dynamic switching of the magnetization in a driven molecular nanomagnet.
abstract: We study the magnetization dynamics of a single molecular nanomagnet driven by static and variable magnetic fields within a classical treatment. The underlying analysis is valid for a regime where the energy is definitely lower than the anisotropy barrier, but still a substantial number of states are excited. We find the phase space to contain a separatrix line. Solutions far from it are oscillatory whereas the separatrix solution is of a soliton type. States near the separatrix are extremely sensitive to small perturbations, a fact that we utilize in obtaining dynamically induced magnetization switching. A new type of magnetization switching is proposed.
authors.affiliation: Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Chotorlishvili
authors.forename: P
authors.initials: P
authors.lastname: Schwab
authors.forename: J
authors.initials: J
authors.lastname: Berakdar